Free GIS

Find free GIS resources. Included under this category are free GIS courses, free GIS software, Free GIS data, and other useful and free GIS resources.


GIS Software

TdhGIS – Free Software for Vector Based Analysis

TdhGIS – Free Software for Vector Based Analysis

TdhGIS is a free GIS software application for Linux and Windows operating systems for spatial analysis of vector based geographic data.  The software can also be used as a shapefile viewer and editor.  Tim Hirrel is the developer of TdhGIS which was developed using C++, wxWidgets and SQLite.  Hirrel, water resources […]

Maps and Cartography

Thematic Mapping at the US County Level with Free Tools

Thematic Mapping at the US County Level with Free Tools

The FlowingData site has a post with instructions from Nathan Yau on how to create “a simple map without all the GIS stuff” of the United States at the county level using free tools.  Using data from the Bureau of Labor Statistics on unemployment rates, Yau provides the steps necessary to […]